glibc/sysdeps/unix/sysv/linux/rewinddir.c
Adhemerval Zanella 905ae44c77 linux: Move posix dir implementations to Linux
This generic implementation already expects a getdents API which
is Linux specific.  It also allows simplify it by assuming
_DIRENT_HAVE_D_RECLEN and _DIRENT_HAVE_D_OFF support.

The readdir are also expanded on each required implementation,
futher fixes and improvements will make parametrize the
implementation more complex.

Checked on x86_64-linux-gnu, i686-linux-gnu, and with a build
for all affected ABIs.
2020-10-16 14:19:23 -03:00

42 lines
1.3 KiB
C

/* Copyright (C) 1991-2020 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
The GNU C Library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library; if not, see
<https://www.gnu.org/licenses/>. */
#include <stddef.h>
#include <dirent.h>
#include <sys/types.h>
#include <unistd.h>
#include <dirstream.h>
/* Rewind DIRP to the beginning of the directory. */
void
__rewinddir (DIR *dirp)
{
#if IS_IN (libc)
__libc_lock_lock (dirp->lock);
#endif
(void) __lseek (dirp->fd, (off_t) 0, SEEK_SET);
dirp->filepos = 0;
dirp->offset = 0;
dirp->size = 0;
dirp->errcode = 0;
#if IS_IN (libc)
__libc_lock_unlock (dirp->lock);
#endif
}
libc_hidden_def (__rewinddir)
weak_alias (__rewinddir, rewinddir)